Roller mill



De- 6, 1932 P. o. DlEDERlcHs 1,889,777

ROLLER MILL Filed April 2e, 192s .1' 32 SO 4Z fg 36 /26 ,I 35 35a' "2,2 i 36 ---5 l' 397 3 i@ 2% 2353 3g d 19 30\- .ZZ l( rm- 17 70 zZ 4 mem:

16 pau/f O. EL@ cteTuLCI/l/S in which side a' grinding rolls are rotatably mounted.

Patented Dec. 6, 1932" UNITED STATES PATENT orales A'Application fied Aprn 2e,

This invention relates to roller mills and more particularly to an improvement in` guide plates such as used on roller mills used for grinding ink and other material, the guide plates serving with tl1e-upperad jacent surface portions of a pair of cooperating rolls, to form a hopper for confining a quantity of the material to be ground and Y to limit' the grindingV operation to a predetermined portion of the rolls. f

rlhe objects of the inventionare; topprovide an improved mounting for oneor more guide plates whereby the same Vmay be adjusted vertically to an elevated position wherein cleaning of the guide plates is facilitated; to provide means for'mounting a pair of guide plates, which a-respaced apart lengthwise of the rolls, whereby the guide plates may be simultaneously adjusted vertically; to. provide means for effecting such adjustment with a relatively quick movement; to provide means for temporarily maintaining the guide plates in elevated po'- sition of adjustmentto permit thezsame to be cleaned with the greatest facility and in general, to provide an improved guide plate, mounting and adjustingstructure. i

Other objects and advantages of the invention will be understood by reference to the following specification and accompanying drawing in whichlhave illustrated a part of a roller mill embodying a selected form of. my invention.

In the drawing:

Fig. 1 is an end elevation of a part of the receiving end of a roller mill, a part being broken away and shown in sect-ion to more clearly illustrate the invention, and

Fig. 2 is an end elevation showing apart of the right hand'end of Fig. 1.

Referring now to the, drawing, I have indicated the opposite side frame portions of the main frame of a roller mill at and 11'., parts a plurality of cooperating For the purpose of the present application, I have shown two of the cooperating grind-V ingy rolls, one being indicated at 12 and the other at 13. The roll 13 is rotatably mounted at its oppositeends in upstanding frame por- .rest or vare seated Y ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO FOUNDCRY COMPQNY, OF YORK, N. Y., A CORPORATION A ROLLER' MILL 1928. Serial No. 272,968.

tions such as 11, and the roll mounted at its opposite ends in bearing blocks suoli as 15, which are horizontally adjustably mounted in suitable Ways provided inthe respective side frames. Acoiled compression spring 16 is interposed between the part 14 and the the receivadjacent surface portions .to form a troughor hopper for holding a quantity of material to be ground. TheV guide on the said Vadjacent upper surface portions so as to form a' tight joint therewith whereby Huid may be supplied to the mill and will be effectively confined between ,the guidel platesV 18 and 19, which constitute the end plates of the hopper. f

The guide plates 18 and 19 are pivotally and horizontally adjustably mounted on a rod or shaft 22, 18 and 19 being respectively, at 26 and 27 respectively to lit over the shaft 22; Set screws28 and 29 threadedly engaging suitable apertures in the bosses 24 and 25 are provided for'locling the on the shaft. It` will be understood. that b shifting the guide plate 18 and119 or both of them along the shaft 22, the material to be ground will be caused to pass between pre- A pair of guide material such as ink guide plates in s the desired position of horizontal' adj ustment,

14 of the side frames 10 and *i 12 is preferably rotatably frame. part; or bar plates preferably each of the said guide plates provided with bosses 24 andv t whichare apertured as shown determined limited portionsA ofthe lengths of the cooperating rolls.

The `shaft 22 is vertically adjustablyy une' mounted in suitable supports or brackets 30 and 31 which are mounted and extend upwardly from the frame part 17 adjacent opposite ends of the cooperating rolls 12 and 13. 'Ihe brackets 30 and 31 are each provided with a forked upper end portion having a way 32 between the forked arm portions and in which ways, as 33 are mounted so as to be `vertically adjustable. 'Ihe bearing blocks are preferably square, or site -flat side portions engaging the straight vertical inner tions of the brackets andthe said bearing locks are apertured to rotatably receive the adjacent ends of the shaft 22.

The ends of the shaft preferably project beyond the outer end of the respective bearpresent instance,

3T, the shaft 22 and ing blocks, and pinion gear members such as 34, are secured in any suitable manner .to the ends of the shaft so as to rotate therewith. In the present instance I have shown theV pinion gears 34 as being' providedY with hub portions having suitable apertures for receiving pins such as 35, which also extend through aperturesl in the shaft, thereby to cause the pinionv gears and shaft to rotate together.

Rack bars such as 36, are secured to one of thearm portions of each-of the forked brackets so as to mesh and cooperate with the pinion gears 34. It will be readilyunderstood that by rotating the. shaft-'22 and pinion gears 34, the gears will be caused to climb up on the racks and thereby elevate the shaft 22, the bearing blocks 33 sliding upwardly in the ways between the arm-portions of the respective. forked brackets; Any suitable means may be provided for effecting rotation of the shaft 22 and pinions 34. In the I have provided a crank 37 having a square socket 8S adapted to fit over a squared end portion 39 of the shaft 22. It will be apparent that by turning'the crank pinions 34 will be rotated in unison and that both ends of the shaft 22 will be elevated in unison. 'Obviously, if the guide plates 18 and 19 are locked in position on the shaft 22 by means of the set screws 28 and 29, the said set screws should be loosened before attempting'to rotate ythe shaft and pinions. Y A

VAny suitable means may be provided for locking or temporarily maintaining the shaft 22 and guide plates in elevated position of vertical adjustment. I may provide some suitable disengageablemeans for normally preventing backward rotation of the shaft 22, i. e., .rotation in the direction necessary for lowering the shaft, but in the present instan ce, I prefer to provide pins vsuch as shown at 40, which are adapted to be passed through apertures 41 provided in the arm portions vof the respective brackets. The .apertures 41 are located adjacent the upper ends of the bearing blocks such.

` sired." at least provided with oppoaces of the forked arm por-` arms in position to support the shaft in the desired position of vertical adjustment, the pins being adapted to be inserted through the apertures underneath the respective bearing blocks 83. I prefer to attach the pins 40 to the respective brackets by means of chains such as shown at 41 to prevent the pins from being lost and to maintain the pins in position where they are handy for use when de- -When the mill is used-for grinding ink or the like, some of the ink'works its way between the adjacent edges of the guide plates and surface portions of the rolls. When it is desired to useth'e mill for grinding a different color of ink, or. when the operation of the mill is to he stopped for any extended length of time, it is desirable that all ink ,adhering to the operating parts of the machine be cleaned therefrom. It will be understood that in a machine embodying the above described guide plate mounting features, such .cleaning 1sv readily accomplished since. the

guide plates which normally are very heavy in weight can easily and quickly be adjusted to elevated position. rfheposition of elevation in which the shaft is adapted to be supported Vby means of the pins 40 is preferably such that the guide plates may be swung clear of the rolls, about theshaft 22 on which they are pivotally mounted. Thus cleaning of the guide plates and also of the rolls is greatly facilitated. n

I am aware that changes may be made in the form, construction and arrangement o parts withoutdeparting from the spirit of the invention, the scope-of which should be determined by reference Yto Vthe following claim,vwhich should be construed as broadly as possible consistent with the state of the art. a f

I claim as my invention:

AIn a roller mill, the combination of a main frame, a pair. of cooperating rolls mounted on said main frame, a pair of-brackets extending upwardly from said main frame respectively adjacent the opposite ends of said pair of rolls, a shaft vertically adjustably mounted in said brackets, a pair of guide plates pivotally mounted on said shaft, depending therefrom and serving with the adjacent upper surface portions of said rolls toform a hopper for holding material to be ground, and means for effecting. vertical adjustment of said shaft to an elevatedposition permitting said plates to Vbe swung about said shaft to a position facilitating cleaning of the guideplates, said means comprising a pair of racks respectively mounted on said brackets, a pair of gears secured to said shaft and respectively meshing with said racks, and, a crank for effecting rotation of said shaft and gears;

, PAUL O. DIEDERIGI-IS. 

